LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U0074 >> Diagnostic Fault Information
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
PTLAN + U0074* U189A* ** U0074* -
PTLAN - U0074* U189A* ** U0074* -
* Other modules/DTCs will set with this fault.
** An open between the on either PTLAN circuit may also cause a DTC U0074.
scientia non olet · About LEMON Manuals